M14D5121632A-3BIG datasheet(8/59 Pages) ESMT

Part #	M14D5121632A-3BIG

Description	8M x 16 Bit x 4 Banks DDR II SDRAM

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Manufacturer	ESMT [Elite Semiconductor Memory Technology Inc.]

Direct Link	http://www.esmt.com.tw/index.asp

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8 / 59 page

ESMT

M14D5121632A

Operation Temperature Condition (TC) -40

°C~95°C

Elite Semiconductor Memory Technology Inc.

Publication Date : Feb. 2009

Revision : 1.1

8/59

AC Operation Conditions & Timing Specification

AC Operation Conditions

-3

Parameter

Symbol

Min.

Max.

Unit

Note

Input High (Logic 1) Voltage

VIH(AC)

VREF + 0.2

V

Input Low (Logic 0) Voltage

VIL(AC)

VREF - 0.2

V

Input Differential Voltage

VID(AC)

0.5

VDDQ+0.6

V

1

Input Crossing Point Voltage

VIX(AC)

0.5 x VDDQ - 0.175

0.5 x VDDQ + 0.175

V

2

Output Crossing Point Voltage VOX(AC)

0.5 x VDDQ - 0.125

0.5 x VDDQ + 0.125

V

2

Note:

1. VID(AC) specifies the input differential voltage |VTR – VCP| required for switching, where VTR is the true input signal (such

as CLK,DQS) and VCP is the complementary input signal (such as CLK ,

). The minimum value is equal to VIH(AC) –

VIL(AC).

2. The typical value of VIX / VOX(AC) is expected to be about 0.5 x VDDQ of the transmitting device and VIX / VOX(AC) is

expected to track variations in VDDQ. VIX / VOX(AC) indicates the voltage at which differential input / output signals must

cross.

Input / Output Capacitance

Parameter

Symbol

Min.

Max.

Unit Note

Input capacitance

(A0~A12, BA0~BA1, CKE, CS , RAS , CAS , WE , ODT)

-3

CIN1

1.0

2.0

pF

1

Input capacitance (CLK, CLK )

CIN2

1.0

2.0

pF

1

DQS,

& Data input/output capacitance

-3

CI / O

2.5

3.5

pF

2

Input capacitance (DM)

-3

CIN3

2.5

3.5

pF

2

Note: 1. Capacitance delta is 0.25 pF.

2. Capacitance delta is 0.5 pF.

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